Research Articles
Mismatch analysis of all-fiber coherent beam combiners based on the self-imaging effect
Yuefang Yan, Yu Liu, Haoyu Zhang, Yuwei Li, Chao Guo, Qiang Shu, Wenhui Huang, Feng Jing, and Rumao Tao
High Power Laser Science and Engineering
  • Mar. 08, 2024
  • Vol. 12, Issue 2 (2024)
Optimization and control of synchrotron emission in ultraintense laser–solid interactions using machine learning – CORRIGENDUM
High Power Laser Science and Engineering
  • Feb. 19, 2024
  • Vol. 12, Issue 1 (2024)
Research Articles
Synchronized off-harmonic probe laser with highly variable pulse duration for laser–plasma interaction experiments
High Power Laser Science and Engineering
  • Feb. 19, 2024
  • Vol. 12, Issue 1 (2024)
Research Articles
Prospect of ultrahigh-resolution fast neutron absorption spectroscopy based on a laser plasma electron accelerator
Wen-Zhao Wang, Jie Feng, Xiao-Peng Zhang, Yao-Jun Li, Wei-Jun Zhou, Wen-Chao Yan, Guo-Qiang Zhang, Chang-Bo Fu, and Li-Ming Chen
High Power Laser Science and Engineering
  • Feb. 19, 2024
  • Vol. 12, Issue 1 (2024)
Research Articles
Design, performance and application of a line-imaging velocity interferometer system for any reflector coupled with a streaked optical pyrometer system at the Shenguang-II upgrade laser facility
High Power Laser Science and Engineering
  • Feb. 19, 2024
  • Vol. 12, Issue 1 (2024)
Community-News
The 19th Direct Drive and Fast Ignition Workshop (DDFIW) contains a series of meetings dedicated to inertial confinement research in Europe. DDFIW provides a unique opportunity for European and overseas scientists working in theory, simulations, and experiments to present and discuss their latest results and future plansin an informal atmosphere. The meeting also addresses new schemes for inertial confinement fusion and related science at the cutting edge of high energy density physics research. Important dates: LPI satellite meeting: 21 May 2024; DDFIW workshop: 22-24 May 2024
High Power Laser Science and Engineering
  • Mar. 28, 2024
  • Vol. , Issue (2024)
Community-Publication
The direct laser acceleration (DLA) of electrons in underdense plasmas can provide hundreds of nC of electrons accelerated to near-GeV energies using currently available lasers. Here we demonstrate the key role of electron transverse displacement in the acceleration and use it to analytically predict the expected maximum electron energies. The energy scaling is shown to be in agreement with full-scale quasi-3D particle-in-cell simulations of a laser pulse propagating through a preformed guiding channel and can be directly used for optimizing DLA in near-future laser facilities. The strategy towards optimizing DLA through matched laser focusing is presented for a wide range of plasma densities paired with current and near-future laser technology. Electron energies in excess of 10 GeV are accessible for lasers at I ∼ 1021 W / cm2.
High Power Laser Science and Engineering
  • Mar. 27, 2024
  • Vol. , Issue (2024)
HPL Highlights
The velocity interferometer system for any reflector (VISAR) coupled with a streaked optical pyrometer (SOP) has been used as a diagnostic tool in inertial confinement fusion (ICF). The VISAR diagnoses the evolution of moving surface velocity by measuring the shifted interference fringes, while the SOP analyzes the radiance temperature of a shocked thin layer by comparing the measured self-emission intensity with the brightness temperature from a standard Plankian blackbody radiator.
High Power Laser Science and Engineering
  • Mar. 22, 2024
  • Vol. 12, Issue 1 (2024)
HPL Highlights
The generation of a flexibly modulated vortex beam with super-high topological charge is always attractive for practical applications. In addition, a high-quality vortex beam with flat-top intensity and a sharp edge is more desired for potential power amplification and optical trapping. Here, a perfect vortex beam (PVB) with topological charge as high as 140 has been realized using super-pixel wavefront shaping. To address the non-uniform intensity distribution of the obtained PVBs, a globally adaptive feedback algorithm (GAFA) based wavefront-shaping is proposed which can efficiently suppress the original intensity fluctuation. Flat-top PVB is then obtained with dramatically reduced beam speckle contrast, while the total mean intensity remains relatively stable. The GAFA based flat-top PVB generation not only alleviates the requirements for ideal incident illumination but also facilitates applications such as inertial confinement fusion and optical trapping.
High Power Laser Science and Engineering
  • Mar. 22, 2024
  • Vol. 12, Issue 1 (2024)
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